Machine for making wooden bowls



UNITED STATES PATENT OFFICE.

RUFUS SIMONDS, OF LUDLOlV, VERMONT, AND G. N. GOODSPEED, OF WINCHENDEN,MASSACHUSETTS.

MACHINE FOR MAKING WOODEN BOWLS.

Specication of Letters Patent No. 29,411, dated July 81, 1860.

To all whom it may concern:

Be it known that we, RUFUS SiaroNDs, of Ludlow, in the county oflVindsor and State of Vermont, and Gr. N. GooDsrnED, of finchenden, inthe county of Voi-cester and State of Massachusetts, have invented a newand useful Improvement in Machines for Making lVooden Bowls; and we dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, in which- Figure 1 is a front viewof our invention; Fig. 2, a longitudinal vertical section of the same;taken in the line oo, oo, Fig. 3. Fig. 3, a plan or top view of thesame.

Similar letters of reference indicate corresponding parts in the severaliigures.

The object of this invention is to cut out wooden bowls with flanches,or rims at their edges, the work to be done at the same time that thebowls are out out so as to complete the whole at one operation. Theinvention consists in having the segment carriage to which the cutter isattached connected to an adjustable or sliding center block and having asupplemental cutter attached to the segment carriage by which, onadjusting the carriage after each bowl is cut, a flanch or rim may becut thereon, as hereinafter fully described.

To enable those skilled in the art to fully understand and construct ourinvention, we

will proceed to describe it.

A, represents a suitable framing which supports a casting or head B, inthe upper part of which a horizontal mandrel O, is placed in suitablebearings a, a.

D, are driving pulleys on the mandrel, and the front end of the mandrelis provided with a screw thread b, on which the bolt D, from which thebowls are cut, is screwed. See Fig. 3, in which the bolt is shown insection.

In the head B, a semicircular bed E, is placed, and secured in ahorizontal position. This bed is secured in the front part of the headB, and on it a segment carriage F is placed. This carriage F, isprovided with a radius bar G, the outer end of which is secured by abolt c, in a sliding block H, said n block being fitted betweenhorizontal guides ol, d, in t-he front part of the head as shown clearlyin Figs. 1 and 2. The block H, has a screw I, connected to it as shownat e, in

Fig. 1, said screw working in a female screw in one of the supports f,of the head as shown in Figs. l and 8. The back edge of the carriage F,is provided with teeth g, into which a pinion 7L, on an upright shaft G,is made to gear when the machine is in operation, said shaft G, having aworm wheel H, on its lever end, into which wheel a screw I, on a shaftJ, gears the shaft J, being driven from a driving shaft K, by means of asuitable belt. The upper end of the shaft G, has its bearing in a leverL, which has its fulcrum at z', and by adjusting which lever the pinionh, may be thrown in or out of gear with the carriage F.

To one end of the carriage F, a curved cutter bar M, is attached in theusual way, to wit, by means of a key j, passing through a staple whichis secured to the back end of the cutter bar, and passes through anoblong slot in a ledge 7c, secured on the carriage. The bar M, isprovided at its outer endwith a cutter N, of usual construction, and thebar M, is fitted between an adjustable friction roller Z, and a bearingm, which are placed on a horizontal bar n, attached to the head B, andare allowed to be adjusted thereon at any desired point by an eccentricclamp o. See Fig. 1.

To the end of the carriage F, opposite to that where the ledge 7c, issecured there is secured a similar ledge p. To the ledge p,-

t-here is attached a cutter bar O, of curved form, and having a cutterg, at its outer end; said cutter having its cutting edge at its lowerpart as shown at r Fig. l.

The operation is as follows: The bolt D, is screwed on the screw b, ofthe mandrel O, and the block H, by turning screw I, is adjusted, betweenits guides CZ, al, so as to be out of line with the mandrel C, as shownin red outline Figs. l and 2. The pinion /L is then thrown in gear withthe carriage F, and motion given the mandrel O, and shaft J, and thecarriage will be moved in the direction indicated by the arrow 1, andthe cutter N, forced by the movement of the carriage F, into therotating bolt D, the cutter describing such a curve as to cut bowlswhich will be portions of oblate spheroids, and not portions of spheresas would be the case were the center or bolt c, of the arm G, coincidentwith the axis of the mandrel O. As the bolt D', rotates it will ofcourse be understood that the cutter N, does not pass the center of theaxis of the mandrel. After the cutter N, has performed its work thepinion z., is thrown out of gear with the carriage F, and the block H,is adjusted centrally between its guides cl, CZ, and coincident with theaXis of the mandrel C, and the pinion L, is then again thrown in gearwith the carriage and the cutter g, cuts into the sides of the bolt andthereby forms a rimY or flanch s, as shown clearly in Fig. 3, theformation of the rim or flanch being due to the varying of the positionof the block H, relatively, with the aXis of the mandrel C.

The operation of the cutter N, is precisely the same as that of the oldmachine or the one in present use, several bars M, of different curvesheilig used so that a nest of bowls will be cut out of each bolt, eachbar M, being adjusted in the ledge 7c, at the proper point to eifectsuch result. As the cutter g, always works in the paths of true circlesconcentric with each other but one bar O, is required, but that isadjusted in its ledge p, nearer the mandrel at each succeeding cut.

Thus it will be seen that by the arrange.

ment of the adjustable block H, and the supplemental cutter g, the bowlsmay have rims or fianches formed on them by a very simple means andwithout materially increasing the manipulation ordinarily required inthe old machine.

We do not claim the segment carriage F,

moving in a curved path and having a cut- RUFUS SIMONDS. Gr. N.GOODSPEED.

l/Vitnesses F. C. RoBBINs, E. S. MERRILL.

